(
课件网) 会响的玩具 想一想 它们为什么可以发出声响？ 摩擦 打击 气流冲击孔洞 哪些材料可以做会响的玩具？ 山东高密“泥叫虎” 山东高密 “摇猴” 山东高密 “啪嗒虎” 制作鼓 饮料罐 木块 纸壳 铃铛 贝壳 罐头盒 奶粉勺 做一做 1、用废旧材料做一个会响的玩具 2、比一比，谁的玩具做的最好，谁的玩具发出的声音最好听。 000 a ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 水米 水 ● icCCEc ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 0 ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● 6eo3g8e●ow 1金 女 上 ⊙Ss”e不 室 运器才 CAFER BUSTELO 一一 机e0 2 RA 行 ○ 图行天下www.Ho.20101123037009544306 61●85 xx
